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/*

 * idedsk.h -- IDE disk definitions

 */

#ifndef _IDEDSK_H_

#define _IDEDSK_H_

#define SECTOR_SIZE     512

#define WPS             (SECTOR_SIZE / sizeof(unsigned int))

#define BLOCK_SIZE      4096

#define WPB             (BLOCK_SIZE / sizeof(unsigned int))

#define DISK_BASE       ((unsigned *) 0xF0400000)  /* disk base address */

#define DISK_CTRL       (DISK_BASE + 0)         /* control/status register */

#define DISK_CNT        (DISK_BASE + 1)         /* sector count register */

#define DISK_SCT        (DISK_BASE + 2)         /* disk sector register */

#define DISK_CAP        (DISK_BASE + 3)         /* disk capacity register */

#define DISK_BUFFER     ((unsigned *) 0xF0480000)  /* address of disk buffer */

#define DISK_CTRL_STRT  0x01U   /* a 1 written here starts the disk command */

#define DISK_CTRL_IEN   0x02U   /* enable disk interrupt */

#define DISK_CTRL_WRT   0x04U   /* command type: 0 = read, 1 = write */

#define DISK_CTRL_ERR   0x08U   /* 0 = ok, 1 = error; valid when DONE = 1 */

#define DISK_CTRL_DONE  0x10U   /* 1 = disk has finished the command */

#define DISK_CTRL_READY 0x20U   /* 1 = capacity valid, disk accepts command */

#define DISK_IRQ        8       /* disk interrupt number */

#define READY_RETRIES   1000000 /* retries to wait for disk to get ready */

#endif /* _IDEDSK_H_ */